class_docstr: A module setting which holds a single string value
  
      
docstr: Return a key that can be used in a dictionary to refer to this setting
  
          
docstr_tok: ["Return","a","key","that","can","be","used","in","a","dictionary","to","refer","to","this","setting"]
code: def key(self):
      """Return a key that can be used in a dictionary to refer to this setting"""
      return self.__key
  
imports: import abc
  import uuid
  from ._validation_error import ValidationError
label_desc: Use image node_id 5 for calling the Setting obj's underlying member method code with example usage: obj.key() and returns: self